“A young girl finds herself transported to a strange land where she kills the first woman she encounters. She than joins up with three natives of the land to hunt down and kill the woman’s sister.”
DirecTV makes the worst use of their limited description space.
Title of Movie, Year of Release, the names of two or three of the main actors, followed by a generic description, which is followed again by the names of the main actors.
On the topic of X-Files, I remember once seeing an episode description along the lines of “Mulder and Scully investigate strange events in a small town”. Well, that only covers a good 2/3 of the episodes, so I guess it narrows it down a little.
My favorite was for Ferris Bueller’s Day Off, where the program guide writers clearly (and safely) assumed that everyone has seen the movie at least 12 times):
I read a description of a movie on Charter’s On Demand once that contained the sentence “Or something.” at the end. No, I can’t remember the name of the movie. Obviously, the description was more entertaining than the actual movie.